Built-In Filter Unlike a regular drain, this drain stopper has an anti-clog basket strainer inside that neatly catches hair and prevents the drain from clogging, so items like jewelry, rings, and dirt won't fall down the drain. No Water Leakage Thickened graduated silica gel gasket, no adhesive needed, oxidation resistance and leak tested. Heavy Duty Basket Stopper Integrally molded and free stitching, the rubber ring around the built-in basket maintains stability. It won't tip over when pressed, helping prevent leaks and drips. Quality Material The pop-up sink drain is made of thickened stainless steel, designed to resist rust, corrosion, and tarnishing. The tub sink drain is equipped with a heavy brass nut and two thickened silicone gaskets to enhance resistance to leaking and oxidation. Easy to Install Simple structure allows for tool-free installation. Just remove the old drain and insert the new one to complete setup.